Superglue was new in the 70's (I also remember the Krazy Glue commercials cementing the guy's hard hat to an I beam then letting him hang from the beam). There's an interview with, IIRC, Lorne Peterson where he describes introducing the crew at ILM to superglue as he was familiar with it from industrial use and it was just becoming available to the consumer market.
That said, of the Graflexes I own some ears are tighter than others and I find gently compressing the flanges where the pin runs through can do the trick as well.
That said, of the Graflexes I own some ears are tighter than others and I find gently compressing the flanges where the pin runs through can do the trick as well.